(a) 
The line \(y = 3\) is a horizontal line intersecting the y-axis at 3.
(b) Ans: \(x = 0.7\) and \(x = -2.7\) (1 d.p.)
From the graph, the solutions are the x-coordinates where \(y = (x + 1)^2\) intersects \(y = 3\).
Algebraically, \((x + 1)^2 = 3\) leads to \(x + 1 = \pm \sqrt{3}\).
Thus, \(x = -1 \pm \sqrt{3} \approx -1 \pm 1.732\).
Solutions: \(x \approx 0.7\) and \(x \approx -2.7\) (correct to 1 decimal place).
